Well that worked.... sort of
I upgraded from version 1.1 to 1.1a.
The machine boots ok and as far as i can tell so far, SLI works also. However, the motherboard speaker beeps randomly (in tone and rythm) once X starts. If i remove one video card, no beeps and everything is normal.
I called Supermicro tech-support -- they were totally baffled. One tech suggested upgrading the firware on the video cards. But EVGA's website doesn't list a download for my card (N527). Another tech suggested disabling the speaker...
PS - disabling SLI with two cards in the machine also stops the beeping.